Hector Martin
67c7043b9a
utils: In EL1, instead of rebooting, break into HV
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-05-15 20:42:50 +09:00
Hector Martin
f669237c2a
start.S: clean up some junk
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-03-04 21:27:25 +09:00
Hector Martin
3872b1a7da
exception: implement el0_call to run code as EL0
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This lets us test register access and other features from EL0.
No serious attempt at security is made, but at least EL0 runs off of a
separate stack and can return to EL2 at any time with `brk`; we can
easily implement a guard mode to break straight to EL2 on exception
later if needed.
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-02-24 21:48:12 +09:00
Hector Martin
eae3d06e85
smp: fix totally broken stack setup
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This worked by accident before...
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-28 23:48:35 +09:00
Hector Martin
11753f9983
start.S: probe the stack after init
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This makes it obvious when the stack is broken.
Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-28 23:48:35 +09:00
Hector Martin
d762391a68
Add code to spin up secondary CPUs
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-28 16:06:12 +09:00
Ferdinand Bachmann
8511d9ff74
start.S: clang compat, don't use '\r' in asm files
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Signed-off-by: Ferdinand Bachmann <theferdi265@gmail.com>
2021-01-23 22:09:22 +09:00
Ferdinand Bachmann
75c3cd39d4
start.S: don't use caller-saved registers accross calls
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Signed-off-by: Ferdinand Bachmann <theferdi265@gmail.com>
2021-01-23 22:09:22 +09:00
Hector Martin
81aaf2ed35
Basic exceptions, irq, cache mgmt support
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-17 00:49:22 +09:00
Hector Martin
8af9f1eb95
Initial commit
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Signed-off-by: Hector Martin <marcan@marcan.st>
2021-01-15 04:03:35 +09:00
